Apparatus for the manufacture of gas



PATENTED JAN, 5, 1904.

' R. DBMPSTER.

APPARATUS PGR THE MANUFAGTURE 0F GAS.

APPLIOATIOE FILED APR.2. 1903.

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UNITED STATES Patented January 5, 1904.

ROBERT DEMPSTER, OF MARIETTA, OHIO.

' SPECIFIGATION-forming part of Letters Patent No. 748,933, datedJanuary 5, 1904.

Application filed April 2, 1903. Serial No. 150,829. (No model.)

T0 all whom it may concern.'

Be it known that l, ROBERT DEMPSTER, a citizen of the United States,residing at Marietta, in the county of Washington and State of Ohio,have invented a new and useful Apparatus for the Manufacture of Gas, ofwhich the following is a specification.

This invention relates to certain improvements in the manufacture ofgas, and has for its principal object to provide an apparatus or plantsuitable for carrying on the manufacture of a good quality of gas in asimple, edective, and thoroughly practical manner.

The apparatus comprises in general a' retort, heating means for theretort, in combination with means for compressing air and for aeratingthe hydrocarbon to be used in the manufacture of gas, the retortreceiving at one end a quantity of mingled air and oi and at the otherend a jet of air. -l

With these and other objects in View the invention consists in the novelconstruction and arrangement of parts hereinafter described, illustratedin the accompanying drawings, and particularly pointed out in theappended claims, it being understood that various changes in the form,proportions, size, and minor details of the structure may be madewithout departing from the spirit or sacricing any of the advantages ofthe invention.

In the accompanying drawings, Figure lis a view, partly in the nature ofa diagram, illustrating an apparatus constructed and arranged inaccordance with the invention. Fig. 2 is a detail sectional viewillustrating, on an enlarged scale, a retort of the character which itis preferred to employ in carrying out the invention.

Similar numerals of reference are employed to indicate correspondingparts throughout both figures of the drawings.

The apparatus or plant forming the subject of the present invention isdesigned for the manufacture of a xed gas from hydrocarbon, and inpractice the cheaper and inferior grades of hydrocarbon may be used, asWell as crude oil of any character or refined or partlyrefined oil.

In carrying out the invention it is preferred to employ a retort l0,which is placed in a suitable furnace and there subjected to the actionof heat, the retort being preferably heated to a cherry-red, and in theone end of said retort is injected a mixture ofY previouslymingled airand hydrocarbon to form a spray or mist, and at the opposite end is anair-injecting tube. In arranging the plant or system for carryingon themanufacture of gas the retort or retorts are placed within a suitablefurnace, which may oe heated by fluid fuel or by coal, the heatingdevices forming no part of the presentinvention.l Adjacent to the retortis au air-pump 36, operated by any suitable power, a gas-en gine beingpreferably employed. The pump is connected to a compressed-air reservoir37, which may be supplied with a suitable valve 38. From the reservoirextends a pipe 23', which is connected to the air-injecting pipe 23 atone end of the retort and serves to admit compressed air from thereservoir to said retort. Adjacent to the compressed-air reservoir is anoiltank 39, connected to the compressed-air reservoir by a pipe 40,which extends between the upper portions of both tanks, its dischargeend extending downwardly within the Yoil-reservoir preferably to a pointbelow the level of the oil therein and having a plurality ofperforations through which the air is forced to mingle with the oil. Thelower portion of the oil-tank is connected by a pipe 42 to a retort-pipe18 and admits the air and oil to that end of the retort opposite theair-iujector.

With an apparatus constructed in accordance with this invention it ispossible to make a continuous run for an indeterminate period of timewithout stppping for cleaning purposes and without 'the removal of anytarry or other deposits, and hydrocarbon of any character may beemployed for the purpose of manufacturing gas.

Having thus described the invention, what is claimed isl. In anapparatus for the manufacture of gas, the combination with a retort, ofa compressed-air reservoir, a supply-pipe leading therefrom to one endof the retort, an oiltank, an air-supply pipe connecting the upperportions of the reservoir and the oil-tank, and a supply-pipe leadingfrom the oil-tank to the opposite end of the retort for admitting amingled jet of air and oil to said retort.

2. In an apparatus for the manufacture of 1o mixture of air and oil, andau air-compressing means connected to the compressed-air reservoir.

In testimony that I claim the foregoing as myown I have hereto afIiXedmy signature in the presence of two witnesses.

ROBERT DEMPSTER.

Witnesses:

J. Ross CoLHoUN, JN0. E. PARKER.

